New Step Men's Double Layer Thicken Thermal Underwear Top & Bottom Set Fleece Lined Quality:Outer fabric in Stretch Cotton,Lining in Fleece.Weight:750g Breathable,anti-static,not ball 2 Pieces Thermal Set (Top & Bottom) Soft,Warm and Comfortable Great to be Wear Alone at Home or Add an Extra Layer of Warmth Under Your Clothes